Oracle Magazine, May/June 2019
Emerging Technologies MACHINE LEARNING in a table called OraMag_ Explain_ Output which is created by this execution The final act is simply to select from this table to find out the rankings which Jane enters in the next paragraph select attribute_ name rank to_ char explanatory_ value 999999 explanatory_ value from OraMag_ Explain_ Output order by rank explanatory_ value desc The output in the notebook is shown in Figure 12 Jane explains the output to her audience The RANK column shows the ranking of the influence of that attribute on the AFFINITY_ CARD column So the output says that the HOUSEHOLD_ SIZE column is the highest ranking in influence on the AFFINITY_ CARD column The next highest ranking one is YRS_ RESIDENCE and so on To make the chart more effective for presentation Jane clicks the bar chart icon shown in a red circle in Figure 13 just above the output It shows the same data but as a bar chart with each bars height representing the EXPLANATORY_ VALUE ORACLE MAGAZINE MAY JUNE 2019 102 Figure 12 Rankings
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